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Images of a new cooling system for a battery system have surfaced at the European Patent Office. And it’s all wrapped up in an R1-like motorcycle.
In the patent from late 2023, Yamaha describes a cooling system for a battery pack, and it is literally in a supersport bike frame reminiscent of the R1. The basic design is surprisingly simple. The large battery pack is only partially supported and hangs in a truss frame. Towards the drive unit, this is completed with aluminum plates that serve as bearings for the engine and swingarm. The mid-engine mounted high in the frame has at least one transmission or a gearbox and drives the rear wheel via a chain.
The cooling of the battery cells themselves is the biggest invention behind this patent application by Yamaha. Horizontal cooling plates, flushed with water, form a double H with the frame, and dissipate the heat from the eight cell modules in total. According to Yamaha, these modules are easy to replace, but the entire battery pack cannot be removed from the frame. In any case, not as easily as with the Gauss II, from which Yamaha seems to have derived part of the cooling system at first glance.
The design with the horizontal cooling plates should allow Yamaha to cool the upright round cells at the terminals, which indicates a high peak power demanded from the cells. If on the other hand the cylinders themselves were cooled, the specifications would mean a long, continuous power draw. This battery is designed to deliver the sporty power that suits this vehicle. Incidentally, the size of the battery pack indicates a capacity of around 20 kWh and the voltage should be between 700 and 800 volts.
Although the drawing shows a sporty model, Yamaha itself is not yet talking about a specific model, but only about the battery cooling system. And even if Yamaha had this technology ready for series production, it would raise questions: why is the auuc package not designed completely as a chassis, like with Ducati or LiveWire? Why is the engine so high in the frame? Why is a gearbox needed? And why is the rear suspension so un-Japanese and not equipped with a link system? Answer: no, this is not a new electric R1 from Yamaha.
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